Replay subscription with startTime later than current time

Hi all,

I create a replay subscription with start time later than the current time.

Example:

Suppose, the current time is 2020-09-30T08:00:00+00:00. Then, I’ll send create-subscription with a later time as below.

<create-subscription xmlns="urn:ietf:params:xml:ns:netconf:notification:1.0">
	<startTime >2021-08-29T07:50:00+00:00</startTime>
</create-subscription>

As per the RFC5277, sending startTime later than current time is invalid & an error should be thrown:

If a <startTime> is requested that is later than the current time,
the following error is returned:
Tag: bad-element
Error-type: protocol
Severity: error
Error-info: <bad-element>: startTime
Description: An element value is not correct; e.g., wrong type,
out of range, pattern mismatch.

But, I’m always getting the reply <ok/>. Why is it like that? I’m using ConfD version 6.4